code: def test_fit_transform_HaveColumnAppearTwice_ExpectColumnsDeduped(
      self,
  ):
      encoder = encoders.OneHotEncoder(
          cols=["match", "match_box"],
          use_cat_names=True,
          handle_unknown="indicator",
      )
      value = pd.DataFrame(
          {"match": pd.Series("box_-1"), "match_box": pd.Series("-1")}
      )
  
      result = encoder.fit_transform(value)
      columns = result.columns.tolist()
  
      self.assertSetEqual(
          {
              "match_box_-1",
              "match_-1",
              "match_box_-1#",
              "match_box_-1##",
          },
          set(columns),
      )
  
imports: import pandas
  from unittest import TestCase
  import numpy
  import tests.helpers
  import category_encoders
label_desc: Use image node_id 5 for calling the TestOneHotEncoderTestCase obj's underlying member method code with example usage: obj.test_fit_transform_HaveColumnAppearTwice_ExpectColumnsDeduped() without return types